Hello Alan, To the best of my knowledge, you do need any screwdriver at all. Just put the adapter on the lens and engage it by turning it like every other bayonet connection. Hope this helps, Erich _____ Von: leicareflex-bounce@xxxxxxxxxxxxx [mailto:leicareflex-bounce@xxxxxxxxxxxxx] Im Auftrag von Hiep Phan Gesendet: Thursday, September 10, 2009 10:00 AM An: leicareflex@xxxxxxxxxxxxx Betreff: [LRflex] Re: Screwdriver for R lens mount Leitax.com would be the right source since David (the owner) actually sells these in correct size. Enjoy, Hiep On Thu, Sep 10, 2009 at 9:04 AM, Alan Siegle <alansiegle@xxxxxxxxxxxxx> wrote: I purchased one of those Leica to EOS lens mount adapters. I need a good quality tiny phillips screwdriver to remove the Leica screws on the original mount and replace them with the longer screws provided with the adapter. I purchased several screwdrivers from Sears, the Craftman 0, 00, & 000, but I'm still having a problem getting two of the screws out. Do any of the members know a good source for such a screwdriver, and what size are you using? Thanks, Alan alansiegle@xxxxxxxxxxxxx View my photographs by visiting my Homepage at- http://homepage.mac.com/alansiegle _____